55198573 has 4 divisors (see below), whose sum is σ = 55330108. Its totient is φ = 55067040.

The previous prime is 55198567. The next prime is 55198589. The reversal of 55198573 is 37589155.

55198573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37589155 = 5 ⋅7517831.

It can be written as a sum of positive squares in 2 ways, for example, as 3674889 + 51523684 = 1917^2 + 7178^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55198573 is a prime.

It is a super-2 number, since 2×55198573² = 6093764922472658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55198373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65136 + ... + 65977.

It is an arithmetic number, because the mean of its divisors is an integer number (13832527).

Almost surely, 2^55198573 is an apocalyptic number.

It is an amenable number.

55198573 is a deficient number, since it is larger than the sum of its proper divisors (131535).

55198573 is a wasteful number, since it uses less digits than its factorization.

55198573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131534.

The product of its digits is 189000, while the sum is 43.

The square root of 55198573 is about 7429.5742139102. The cubic root of 55198573 is about 380.7523713359.

The spelling of 55198573 in words is "fifty-five million, one hundred ninety-eight thousand, five hundred seventy-three".